Need a Good SAT book

Hello,
Can anyone please help me with this?
I gave my SAT II Physics and got 670. But im not satisfied with this score so im gonna repeat this exam in may. The problem is tht im doing self study, and i studied from Barron's book...but the topics are difficult to understand. Some topics are new to me. Im also doing A level course and its Curriculum is different from SAT. So please ppl , can anyone of u recommend a good SAT book/books to score above 750?
Thnx

I second newton's recommendation for the Princeton review over Barron's but perhaps for different reasons. The Barron's book is horrible (absolutely horrible) to use for the SAT 2 in physics because it gives you a ton of rote calculation problems and there are zero calculation problems in the actual exam. The actual exam consists of mostly conceptual problems with little to no calculation so please don't use Barron's; I don't think they even knew what exam they made it for. I took the Sat 2 physics 2 years ago (junior year of HS) but I highly doubt the test has changed much. As for Math Level 2 now that is a test for which I would recommend Barron's but don't fear much about this exam. If you've taken pre - calc or something equivalent in school this test will be an absolute breeze; it's just a plug into your calculator and get an answer exam (unlike the physics). The curve on the physics sat 2 is very generous (if I recall correctly I got 4 questions wrong when I took it as mentioned and still got an 800) so if you are pressed for time on the exam and have not finished everything try to take that into account.